JPH0261328B2 - - Google Patents

Info

Publication number
JPH0261328B2
JPH0261328B2 JP57183869A JP18386982A JPH0261328B2 JP H0261328 B2 JPH0261328 B2 JP H0261328B2 JP 57183869 A JP57183869 A JP 57183869A JP 18386982 A JP18386982 A JP 18386982A JP H0261328 B2 JPH0261328 B2 JP H0261328B2
Authority
JP
Japan
Prior art keywords
plug
diameter
die
bearing
steel pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP57183869A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5973115A (ja
Inventor
Kan Sunaga
Toshio Sakurai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanwa Kokan Co Ltd
Original Assignee
Sanwa Kokan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanwa Kokan Co Ltd filed Critical Sanwa Kokan Co Ltd
Priority to JP18386982A priority Critical patent/JPS5973115A/ja
Publication of JPS5973115A publication Critical patent/JPS5973115A/ja
Publication of JPH0261328B2 publication Critical patent/JPH0261328B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/16—Making tubes with varying diameter in longitudinal direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
JP18386982A 1982-10-19 1982-10-19 段付引抜鋼管 Granted JPS5973115A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18386982A JPS5973115A (ja) 1982-10-19 1982-10-19 段付引抜鋼管

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18386982A JPS5973115A (ja) 1982-10-19 1982-10-19 段付引抜鋼管

Publications (2)

Publication Number Publication Date
JPS5973115A JPS5973115A (ja) 1984-04-25
JPH0261328B2 true JPH0261328B2 (enrdf_load_stackoverflow) 1990-12-19

Family

ID=16143243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18386982A Granted JPS5973115A (ja) 1982-10-19 1982-10-19 段付引抜鋼管

Country Status (1)

Country Link
JP (1) JPS5973115A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011045924A (ja) 2009-08-28 2011-03-10 Sanwa Kokan Kk 鋼管引抜装置、及び引抜鋼管の製造方法
EP3427852A4 (en) 2016-03-11 2020-02-19 Nippon Steel Corporation METHOD FOR MANUFACTURING STEEL PIPE OF DIFFERENT THICKNESSES AND STEEL PIPE OF DIFFERENT THICKNESSES
US12214395B2 (en) 2019-09-06 2025-02-04 Sango Co., Ltd. Extrusion molding method for differential thickness pipe and extrusion molding apparatus for differential thickness pipe

Also Published As

Publication number Publication date
JPS5973115A (ja) 1984-04-25

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